How to create a watermark on an image using Java OpenCV library?

Following Java example draws a watermark (“Hello”) on the given image and saves it back.

Example

import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import javax.imageio.ImageIO; public class WaterMarkExample {    public static void main(String[] args) throws IOException {       //Reading the contents of an image       File file = new File("D:\Images\test1.jpg");       BufferedImage img = ImageIO.read(file);       //Creating an empty image for output       int height = img.getHeight();       int width = img.getWidth();       BufferedImage res = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);       //Creating a graphics object       Graphics graphics = res.getGraphics();       graphics.drawImage(img, 0, 0, null);       //Creating font for water mark       Font font = new Font("Arial", Font.PLAIN, 45);       graphics.setFont(font);       graphics.setColor(new Color(255, 150, 200, 30));       //Drawing the water mark string on the image       graphics.drawString("Hello", width/7, height/5);       //Disposing the string       graphics.dispose();       //Writing the result image.       file = new File("D:\Images\watermark.jpg");       ImageIO.write(res, "jpg", file);    } }

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Output